Substructured Pseudodynamic and Statically Reversed Cyclic Loading Tests of Prestressed Concrete Viaduct Structures
Prestressed concrete viaduct structures were commonly used over the past two decades for the construction of many highways and railways. The objective of this study was to clarify the inelastic response behavior of partially prestressed concrete viaduct structures during severe earthquake excitations. A study that includes experimental and analytical phases was carried out. Small-scaled models were employed so as to represent actual viaduct structures. Specimens representing the PC girders of the viaduct structures were tested experimentally. Two testing techniques were employed in the experimental phase of the study. The first technique was a statically reversed cyclic loading test. The objective of the statically reversed cyclic loading test was to study the inelastic response behavior of the PC girders and to obtain the hysteretic-load deformational characteristics. The sub-structured pseudo-dynamic testing technique was implemented as the second testing technique. During the sub-structured pseudo-dynamic test, the PC girder was tested experimentally and the RC columns of the viaduct structure were simulated analytically. An amplified excitation of the 1995 Hyogo Ken Nanbu earthquake was used. Response analyses for the viaduct model in terms of hysteretic moment-rotation curves and time-histories were carried out. The plastic deformability expressed in terms of the ductility factor and the dissipated energy was examined. A comparison between the experimental results and results obtained from response analyses was made. A good agreement between the experimental and analytical results was found. The study revealed that not only the RC columns but also the PC girders may undergo extensive damage during severe earthquake excitations.
-
Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Zatar, Wael A
-
Conference:
- Transportation Research Board 85th Annual Meeting
- Location: Washington DC, United States
- Date: 2006-1-22 to 2006-1-26
- Date: 2006
Language
- English
Media Info
- Media Type: CD-ROM
- Features: Figures; References;
- Pagination: 16p
- Monograph Title: TRB 85th Annual Meeting Compendium of Papers CD-ROM
Subject/Index Terms
- TRT Terms: Cyclic tests; Earthquakes; Prestressed concrete; Repeated loads; Testing; Viaducts
- Uncontrolled Terms: Inelastic response; Seismic response
- Subject Areas: Bridges and other structures; Highways; I20: Design and Planning of Transport Infrastructure;
Filing Info
- Accession Number: 01029684
- Record Type: Publication
- Report/Paper Numbers: 06-1891
- Files: TRIS, TRB
- Created Date: Jul 26 2006 9:12AM